#ifndef MAINWINDOW_H
#define MAINWINDOW_H

//#define QT_NO_OPENGL  
#include <QMainWindow>  
#include <QString>  
  
namespace Ui {  
class MainWindow;  
}  
  
class MainWindow : public QMainWindow  
{  
    Q_OBJECT  
  
public:  
    explicit MainWindow(QWidget *parent = 0);  
    ~MainWindow();  
  
private slots:  
    void on_pushButton_clicked();  
  
    void displayInput(QString str);  
    void on_pushButton_2_clicked();  
    void on_pushButton_3_clicked();  
    void on_pushButton_4_clicked();  
    void on_pushButton_5_clicked();  
    void on_pushButton_6_clicked();  
    void on_pushButton_7_clicked();  
    void on_pushButton_8_clicked();  
    void on_pushButton_9_clicked();  
    void on_pushButton_10_clicked();  
    void on_pushButton_12_clicked();  
    void on_pushButton_13_clicked();  
    void on_pushButton_14_clicked();  
    void on_pushButton_15_clicked();  
    void on_pushButton_11_clicked();  
    void on_pushButton_16_clicked();  
  
signals:  
    void input(QString str);  
  
private:  
    Ui::MainWindow *ui;  
  
    bool _Flag;  
  
};  
  
#endif // MAINWINDOW_H
